Biographer Robert Caro; Mountaineer Explores Mariana Trench

Robert Caro is the two-time Pulitzer Prize-winning author of "The Power Broker" and "The Years of Lyndon Johnson." Host Robin Young talks to him about "Working," his latest book. Also, Vanessa O'Brien has climbed the tallest mountains on the earth and she's just gone into the deepest place on the planet: the Challenger Deep in the Pacific Ocean's Mariana Trench. Jeremy Hobson speaks with her. That and more, in hour two of Here & Now's June 24, 2020, full broadcast. You can find more at hereandnow.org — and follow us on Twitter, Instagram or join the conversation on Facebook.